Contour recorder



Nov. 15, 1927. 1,649,042

J. G. RITTER CONTOUR RECORDER Filed Oct. 10, 1925 INVENTOR John G. Rifle:

ATT'oRNEY ,relat ive position andto H p thelchel't Mat -1 F' seetfiee d-i Patented Nov. 15,

UNITED STATES- WILKINSBURG, PENNSYLVANIA. ASSIGNOR TO WESTINGHOUSE G COIvIPANY, A CORPORATION OF PENNSYLVANIA.

JOHN G. BITTER, OF

ELECTRIC AND MANUFACTUBIN PATENT OFFICE.

CONTOUR RECORDER.

Application filed October 10, 1925. Serial No. 61,861.

My invention relatesio contour recorders,

and particularly to means for,

and methods of, recording the contours of gear teeth.

One object of my invention 18 to: provide a 5 contour recorder that shall be s mple and durable in construction, economical to manu facture and effective in its operation;

Another object of my invention; 1$ t 0.-PI'0 vide a contour recorder. in. which ing and record-receiving elements mounted'on a single supporting-mead Another object of my'inven'tion'is ,t

l vide a contour recorder inwh ch the record ing and record-receiving l e iita. 1

capable of ,so clampingbetween them the;

vice to, be recorde .ast

A further obj ect, of ui'vgentigm' is;to. 1jo vide a e h d by rh ha e-ee t e et -ee tain objects maybe more eifectively,recorded than heretofore. I

In devices, such as stantiallyevery increin "ent' surfaces thereof bear s'fgan am rtantjjr agtion to: the adjacent surfaces of co-opdrQtingpt elthQ it; been difiicult, inthe past, tome This difficulty is occas oned ,pe t'z iiliai:

relation of the teeth, thickness of the gears an abyar s n 0f.

on,whiclilth teeth. are

. disposed, the ordinary v netlig ds of tracing by,

pencil and, making impres o e erene b ch alkingthe teeth an them against the paper being, cumberso e and more or less ineifective 1 in onveni ods of taking pictures are subjectlio errors, in size, lights, -shades and perspective and require the use of'c a'meras and other expen sive apparatus. It is my aim mentioned ObJQOtIOIlS to overcome all of the aboveand to provide a method of, and. means for, conveniently, economically and effectively recording the contours of gear teeth and devices of like nature.

Accordingly. in practicing my invention,

I provide a method of recording the contours medium, such as receiving? element agtti light,

by placing the record nst the gear or teeth to be recorded, as to more effectively obtain the records desired. a

I, also provide a simple, economical and effective device by which the recording and record-receiving elements maybe so mounted on a single supporting means and so caused to effect the above-mentionedshielding operation, by clamping the object t obe recorded between them, as to more eifectively practice the method. i v I i lfligure lot the accompanying drawings is a,plan view, partially in ,elevationand par tially in section, ofa deviceconst r'ucted in accordance with, and: for practicing the method of, my invention, showing, in broken lines and in operative relation to the device, apail ijof.shaft mounted'gears. l

a ,s'idel view, ofthe device of .AI). {V I .r-aw- I I l Fig. 3 is anend view, of Figs? 1 and 2', as viewed in thef'drawings, showing. the device and portions of the gears infull lines farid' iw Fig. 41s a. view thelrind of shield allflpart sj (if-the; elements Contact with I the; teethand in, passi g, or in, permitting tdpass, a medium between'the teeth to discolorthe area o'f' the sheet between the teeth.

w z j v 1" While y method-contemplates,jtlieipass;

ing of heat,-fluid or other mediabetween the teeth and against a' sheet or surface -which is: affected these media, it, preferably is" practiced with .a li gl1t .sensitiied surface, such-{as or'r' ordinary. photographic or blue print paper, and a source of light, such as an electric lamp.

A preferred form of device, for practicing the method, comprises in general. a main supporting means or rod 1,'and a lamp device 2 and a chart-holder device 3 mounted on the rod 1 for operative positioning at opposite sides of one or both of gears 5 and 6 that are mounted on shafts 7 and 8, respectively.

The lamp device 2 comprises a bearingsupport portion 10 that is longitudinally slidably mounted on the rod 1 and a housmg or reflector portion 11 n which is sup The chart-holder device comprises? bearing-support portion that is also longitudinally slidably mounted on the rod '1 although either one of the bearing portions 10 and 20 may be 'fixed to the'rod and the other:morabl y mounted thereon, and alights'eiisitiied' eta-g holder. portion 2 1." Sinai I'zi'rly I the; lamp "det i'ce 2,-" the chart-holder dv' "3 is also biased along the rod r eay a" projection 22bit the" rod 'bv' a be placedgin' 'thisinstanee'the surfaces help flat tofeo'n'for'm to' the fiat. si des of the gears In "operation; a light sensitized sheet, such v 1 nl ee the holder 21, in any suita le manneijiso as o have sur a e re s ly. en toxrar djthegear's 5 and-'6 from the rieinainder of the'holder. l w "TVith thes'witchin the off position arid the devices 2 z 1 n d 3 forced aparfial ong the rodlfiigainsttlie action 'of theisprings 17 and 20 so as to clamp the'g ears'f' S- ain'diG between them, the. device is i'n"pfo:sit io'n to effect a record. Th'is position is such as to completely protect certain portiohs bf. the sheet 25 from the iight of the lamp which is reflectedbetween the gear teeth and to expose certain other portions of the sheet to this light. Thus when the switch 2:) opcratedio its on position and the sheet 25 exposed, a record, similar to that. shown in Fig. 4 is obtained. i \Vhile I have shown and described a particular form of both the method and the device of my invention various modifications meh'ti th cbnto'iii iif fihic-h is to be recorded,

and; being rnovable relatively toward each tembeqfiis zs; r

f JOHN G. BITTER. 

